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https://www.readbyqxmd.com/read/29690927/effects-of-transcranial-led-therapy-on-the-cognitive-rehabilitation-for-diffuse-axonal-injury-due-to-severe-acute-traumatic-brain-injury-study-protocol-for-a-randomized-controlled-trial
#1
João Gustavo Rocha Peixoto Dos Santos, Ana Luiza Costa Zaninotto, Renato Amaro Zângaro, Ana Maria Costa Carneiro, Iuri Santana Neville, Almir Ferreira de Andrade, Manoel Jacobsen Teixeira, Wellingson Silva Paiva
BACKGROUND: Photobiomodulation describes the use of red or near-infrared light to stimulate or regenerate tissue. It was discovered that near-infrared wavelengths (800-900 nm) and red (600 nm) light-emitting diodes (LED) are able to penetrate through the scalp and skull and have the potential to improve the subnormal cellular activity of compromised brain tissue. Different experimental and clinical studies were performed to test LED therapy for traumatic brain injury (TBI) with promising results...
April 24, 2018: Trials
https://www.readbyqxmd.com/read/29688392/challenge-to-unity-relationship-between-hemispheric-asymmetry-of-the-default-mode-network-and-mind-wandering
#2
Shogo Kajimura, Takanori Kochiyama, Nobuhito Abe, Michio Nomura
The default mode network (DMN) is considered a unified core brain function for generating subjective mental experiences, such as mind wandering. We propose a novel cognitive framework for understanding the unity of the DMN from the perspective of hemispheric asymmetry. Using transcranial direct current stimulation (tDCS), effective connectivity estimation, and machine learning, we show that the bilateral angular gyri (AG), which are core regions of the DMN, exhibit heterogeneity in both inherent network organization and mind wandering regulation...
April 21, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29688276/frontal-transcranial-direct-current-stimulation-induces-dopamine-release-in-the-ventral-striatum-in-human
#3
Clara Fonteneau, Jérome Redoute, Frédéric Haesebaert, Didier Le Bars, Nicolas Costes, Marie-Françoise Suaud-Chagny, Jérome Brunelin
A single transcranial direct current stimulation (tDCS) session applied over the dorsolateral prefrontal cortex (DLFPC) can be associated with procognitive effects. Furthermore, repeated DLPFC tDCS sessions are under investigation as a new therapeutic tool for a range of neuropsychiatric conditions. A possible mechanism explaining such beneficial effects is a modulation of meso-cortico-limbic dopamine transmission. We explored the spatial and temporal neurobiological effects of bifrontal tDCS on subcortical dopamine transmission during and immediately after the stimulation...
April 21, 2018: Cerebral Cortex
https://www.readbyqxmd.com/read/29687959/aerobic-exercise-training-enhances-cerebrovascular-pulsatility-response-to-acute-aerobic-exercise-in-older-adults
#4
Nobuhiko Akazawa, Koichiro Tanahashi, Keisei Kosaki, Song-Gyu Ra, Tomoko Matsubara, Youngju Choi, Asako Zempo-Miyaki, Seiji Maeda
The brain's low resistance ensures a robust blood flow throughout systole and diastole and is susceptible to flow pulsatility. Increased cerebral pulsatility contributes to the progression of cerebrovascular disease. Although aerobic exercise affects vascular function, little is known about the effect of exercise on the cerebral pulsatility index in older adults. The aim of this study was to investigate the effect of exercise training on the post-exercise cerebral pulsatility response in older adults. Ten healthy older adults participated in a 12-week exercise training intervention...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29687859/clinical-diagnosis-of-cerebral-vasospasm-after-subarachnoid-hemorrhage-by-using-transcranial-doppler-sonography
#5
D-D Li, J-Y Chang, C-X Zhou, J-B Cui
OBJECTIVE: To investigate the diagnosis of cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH) by transcranial Doppler (TCD) sonography. PATIENTS AND METHODS: 90 patients with SAH admitted to the Department of Neurosurgery of Weifang People's Hospital from January 2016 to December 2016 were selected. TCD and digital subtraction angiography (DSA) were used to diagnose the prevalence of CVS in patients. The severity of disease was evaluated (improved-Fisher grading)...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29686816/evaluation-of-the-prognostic-value-of-multimodal-intraoperative-monitoring-in-posterior-fossa-surgery-patients-with-cerebellopontine-angle-tumors
#6
Mohsen Dalvandi, Ali Nazemi Rafie, Alireza Kamali, Alireza Jamshidifard
The aim of this study was to compare the outcomes of four intraoperative monitoring approaches in order to compare their prognostic value in surgical complications of the facial nerve. This quasi-experimental study was conducted on 25 patients with Cerebellopontine Angle (CPA) tumors, who were hospitalized in the Valiasr Hospital, affiliated to the Arak University of Medical Sciences, Arak, Iran. The degree of the facial nerve paralysis was assessed based on the House-Brackmann (HB) facial nerve grading system...
January 12, 2018: European Journal of Translational Myology
https://www.readbyqxmd.com/read/29686609/cerebellar-transcranial-direct-current-stimulation-modulates-corticospinal-excitability-during-motor-training
#7
Rebekah L S Summers, Mo Chen, Andrea Hatch, Teresa J Kimberley
Background : Cerebellar activity can be modulated using cerebellar transcranial direct current stimulation (ctDCS) and, when applied concurrently with task training, has been shown to facilitate cognitive and motor performance. However, how ctDCS facilitates motor performance is not fully understood. Objective/Hypothesis : To assess the electrophysiological and motor performance effects of ctDCS applied during motor training. Methods : Fourteen healthy adults (age 28.8 ± 10.5 years) were randomly assigned to complete one session of finger tracking training with either simultaneous bilateral anodal or sham ctDCS...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29685515/cerebral-embolization-during-endovascular-infrarenal-juxtarenal-and-suprarenal-aortic-aneurysm-repair-high-risk-maneuvers-and-associated-neurologic-outcomes
#8
Ruth A Benson, David Matthews, Vanessa Loftus, Grainne Nicholson, David Tropman, Ian M Loftus
BACKGROUND: Risk factors for postoperative cognitive decline after noncardiac surgery are multifactorial and poorly understood. Evidence suggests that perioperative microembolic damage to the brain on movement of wires and catheters during endovascular aortic procedures may play an important role. Endovascular aortic aneurysm repair requires invasive manipulation of wires and cannulas within the aorta, but research into cerebral emboli during aortic aneurysm repair and cognitive or neurologic injury is scarce and limited to thoracic aneurysms...
April 20, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29685065/noninvasive-brain-stimulation-challenges-and-opportunities-for-a-new-clinical-specialty
#9
Aaron D Boes, Michael S Kelly, Nicholas T Trapp, Adam P Stern, Daniel Z Press, Alvaro Pascual-Leone
Noninvasive brain stimulation refers to a set of technologies and techniques with which to modulate the excitability of the brain via transcranial stimulation. Two major modalities of noninvasive brain stimulation are transcranial magnetic stimulation (TMS) and transcranial current stimulation. Six TMS devices now have approved uses by the U.S. Food and Drug Administration and are used in clinical practice: five for treating medication refractory depression and the sixth for presurgical mapping of motor and speech areas...
April 24, 2018: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/29684752/dynamic-semantic-cognition-characterising-coherent-and-controlled-conceptual-retrieval-through-time-using-magnetoencephalography-and-chronometric-transcranial-magnetic-stimulation
#10
Catarina Teige, Giovanna Mollo, Rebecca Millman, Nicola Savill, Jonathan Smallwood, Piers L Cornelissen, Elizabeth Jefferies
Distinct neural processes are thought to support the retrieval of semantic information that is (i) coherent with strongly-encoded aspects of knowledge, and (ii) non-dominant yet relevant for the current task or context. While the brain regions that support readily coherent and more controlled patterns of semantic retrieval are relatively well-characterised, the temporal dynamics of these processes are not well-understood. This study used magnetoencephalography (MEG) and dual-pulse chronometric transcranial magnetic stimulation (cTMS) in two separate experiments to examine temporal dynamics during the retrieval of strong and weak associations...
March 30, 2018: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29684047/effect-of-hypnotic-suggestion-on-knee-extensor-neuromuscular-properties-in-resting-and-fatigued-states
#11
Naiandra Dittrich, Daniel Agostino, Roberta Antonini Philippe, Luiz Guilherme A Guglielmo, Nicolas Place
PURPOSE: The aim of this study was to investigate whether hypnotic suggestions can alter knee extensor neuromuscular function at rest and during exercise. METHODS: Thirteen healthy volunteers (8 men and 5 women, 27 ± 3 years old) took part in this counterbalanced, crossover study including two experimental (hypnosis and control) sessions. Knee extensor neuromuscular function was tested before and after hypnosis suggestion by using a combination of voluntary contraction, transcutaneous femoral nerve electrical stimulation and transcranial magnetic stimulation (TMS)...
2018: PloS One
https://www.readbyqxmd.com/read/29683810/evidence-of-the-homeostatic-regulation-with-the-combination-of-transcranial-direct-current-stimulation-and-physical-activity
#12
Adriana Baltar, Fernanda Nogueira, Déborah Marques, Maíra Carneiro, Kátia Monte-Silva
Transcranial direct current stimulation (tDCS) can optimize beneficial effects induced by motor practice in patients with neurological disorders. However, possibly due to homeostatic regulation, the conditioning effects of tDCS are often imprecise and variable, limiting its therapeutic application. OBJECTIVE: to explore the magnitude and direction of the after-effects induced by physical activity (PA) on tDCS-preconditioned cortical excitability (CE). DESIGN: First, a crossover experiment was performed with 12 subjects to determine whether a single session of low-, moderate- and high-intensity PA on a treadmill modulates the motor cortical excitability measured by transcranial magnetic stimulation...
April 20, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29683030/transcranial-direct-current-stimulation-enhances-motor-skill-learning-but-not-generalization-in-chronic-stroke
#13
Manuela Hamoudi, Heidi M Schambra, Brita Fritsch, Annika Schoechlin-Marx, Cornelius Weiller, Leonardo G Cohen, Janine Reis
BACKGROUND: Motor training alone or combined with transcranial direct current stimulation (tDCS) positioned over the motor cortex (M1) improves motor function in chronic stroke. Currently, understanding of how tDCS influences the process of motor skill learning after stroke is lacking. OBJECTIVE: To assess the effects of tDCS on the stages of motor skill learning and on generalization to untrained motor function. METHODS: In this randomized, sham-controlled, blinded study of 56 mildly impaired chronic stroke patients, tDCS (anode over the ipsilesional M1 and cathode on the contralesional forehead) was applied during 5 days of training on an unfamiliar, challenging fine motor skill task (sequential visual isometric pinch force task)...
April 1, 2018: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29682434/hypomania-risk-in-noninvasive-brain-stimulation
#14
REVIEW
Abhishek Gupta, Mahwish Adnan
Noninvasive brain stimulation, using electromagnetic waves (repetitive transcranial magnetic stimulation (rTMS)) and direct electrical current (transcranial direct current stimulation (tDCS)), is a new frontier in treating psychiatric maladies. While still being developed as viable treatment options, both options have had numerously reported side-effects, with hypomania being a significant concern during investigations. While there has been a relatively rare incidence of hypomania among rTMS/tDCS trials, it still posits an important issue regarding the safety of both treatment modalities...
February 19, 2018: Curēus
https://www.readbyqxmd.com/read/29682061/transcranial-and-epidural-approach-for-spontaneous-cerebrospinal-fluid-leakage-due-to-meningoencephalocele-of-the-lateral-sphenoid-sinus
#15
Ryosuke Shintoku, Masahiko Tosaka, Tatsuya Shimizu, Yuhei Yoshimoto
We experienced a case of sphenoid sinus type meningoencephalocele manifesting as severe cerebrospinal fluid (CSF) rhinorrhea. A 35-year-old man became aware of serous nasal discharge 1 year previously, which had gradually worsened. The nasal discharge was diagnosed as CSF rhinorrhea. Head computed tomography (CT) showed several small depressions in the bone of the left middle cranial fossa, and the largest depression extended through the bone to the lateral sphenoid sinus. Head magnetic resonance imaging revealed that the meningoencephalocele projected to the lateral sphenoid sinus, through this small bone defect of the middle cranial fossa...
April 2018: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29681880/exploring-the-role-of-temporoparietal-cortex-in-upright-perception-and-the-link-with-torsional-eye-position
#16
Jorge Otero-Millan, Ariel Winnick, Amir Kheradmand
Upright perception is a key aspect of orientation constancy, as we maintain a stable perception of the world despite continuous movements of our eyes, head, and body. Torsional position of the eyes can impact perception of upright by changing orientation of the images on the retina relative to gravity. Here, we investigated the role of temporoparietal cortex in upright perception with respect to ocular torsion, by means of the inhibitory effect of continuous theta burst transcranial magnetic stimulation (TMS)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29681876/null-tdcs-effects-in-a-sustained-attention-task-the-modulating-role-of-learning
#17
Noa Jacoby, Michal Lavidor
The purpose of this study was to investigate sustained attention through modulation of the fronto-cerebral network with transcranial direct current stimulation (tDCS) in adults with attention-deficit/hyperactivity disorder (ADHD) and control participants. Thirty-seven participants (21 with ADHD) underwent three separate sessions (baseline, active tDCS, and sham) and performed the MOXO Continuous Performance Test (CPT). We applied double anodal stimulation of 1.8 mA tDCS for 20 min over the left and right dorsolateral prefrontal cortex (DLPFC), with the cathode over the cerebellum...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29680396/changes-in-canine-cerebral-perfusion-after-accelerated-high-frequency-repetitive-transcranial-magnetic-stimulation-hf-rtms-a-proof-of-concept-study
#18
R Dockx, C Baeken, R Duprat, F De Vos, J H Saunders, I Polis, K Audenaert, K Peremans
Repetitive transcranial magnetic stimulation (rTMS) has been proposed as a treatment for several neuropsychiatric disorders in human beings, but the neurobiological effects of rTMS in dogs have not been investigated to date. A proof of concept study was designed to evaluate the effect of rTMS on cerebral perfusion, measured with single photon emission computed tomography (SPECT), in dogs. An accelerated high frequency (aHF)-rTMS (20Hz) protocol was applied to the canine left frontal cortex. To accurately target this area, eight dogs underwent a 3 Tesla magnetic resonance imaging (MRI) scan before stimulation...
April 2018: Veterinary Journal
https://www.readbyqxmd.com/read/29680227/cerebellar-transcranial-direct-current-stimulation-interacts-with-bdnf-val66met-in-motor-learning
#19
Rick van der Vliet, Zeb D Jonker, Suzanne C Louwen, Marco Heuvelman, Linda de Vreede, Gerard M Ribbers, Chris I De Zeeuw, Opher Donchin, Ruud W Selles, Jos N van der Geest, Maarten A Frens
BACKGROUND: Cerebellar transcranial direct current stimulation has been reported to enhance motor associative learning and motor adaptation, holding promise for clinical application in patients with movement disorders. However, behavioral benefits from cerebellar tDCS have been inconsistent. OBJECTIVE: Identifying determinants of treatment success is necessary. BDNF Val66Met is a candidate determinant, because the polymorphism is associated with motor skill learning and BDNF is thought to mediate tDCS effects...
April 11, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29679735/age-dependent-effects-of-brain-stimulation-on-network-centrality
#20
Daria Antonenko, Till Nierhaus, Marcus Meinzer, Kristin Prehn, Axel Thielscher, Bernd Ittermann, Agnes Flöel
Functional magnetic resonance imaging (fMRI) studies have suggested that advanced age may mediate the effects of transcranial direct current stimulation (tDCS) on brain function. However, studies directly comparing neural tDCS effects between young and older adults are scarce and limited to task-related imaging paradigms. Resting-state (rs-) fMRI, that is independent of age-related differences in performance, is well suited to investigate age-associated differential neural tDCS effects. Three "online" tDCS conditions (anodal, cathodal, sham) were compared in a cross-over, within-subject design, in 30 young and 30 older adults...
April 18, 2018: NeuroImage
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